@string{ JCP = "Journal of Computational Physics" }
@string{ JGR = "Journal of Geophysical Research" } 
@string{ GRL = "Geophysical Research Letters" } 
@string{ JAS = "Journal of the Atmospheric Sciences" } 
@string{ CAP = "Contributions to Atmospheric Physics" } 
@string{ DAO = "Dynamics of Atmospheres and Oceans" } 
@string{ SIAMSCI = "SIAM Journal of Scientific Computing" } 
@string{ SIAMNUM = "SIAM Journal of Numerical Analysis" } 
@string{ MWR = "Monthly Weather Review" } 
@string{ NAMS = "Notices ot the AMS" } 
@string{ AO = "Atmosphere-Ocean" } 
@string{ ECMWF = "European Centre for Medium-Range Weather Forecast" } 
@string{ PC = "Parallel Computing" } 
@string{ NUM = "Numerische Mathematik" } 
@string{ TELLA = "Tellus A"}
@string{ MC = "Mathematics of Computation" } 
@string{ QJRMS = "Quarterly Journal of the Royal Meteorological Society"} 
@string{ IJNMF = "International Journal of Numerical Methods in Fluids" } 
@string{ BAMS = "Bulletin of the American Meteorological Society"}
@string{ MPI-M = "Max Planck Institute for Meteorology, Hamburg, Germany"}




@Article{hoskins:1975,
  author = 	 {Hoskins, B. J. and Simmons, A. J.},
  title = 	 {A multi-layer spectral model and the semi-implicit method},
  journal =   QJRMS,
  year = 	 1975,
  volume =	 101,
  pages =	 {637-665}
}

@techreport{roeckner:2003, 
   author    = {E. Roeckner and G. B\"auml and L. Bonaventura and R. Brokopf and M. Esch 
                and M. A. Giorgetta and S. Hagemann and I. Kirchner and L. Kornblueh 
                and E. Manzini and A. Rhodin and U. Schlese and U. Schulzweida and A. Tompkins}, 
   title     = {The atmospheric general circulation model {ECHAM} 5. {PART I}: model description.}, 
   institution = MPI-M, 
   year      = {2003}, 
   month     = {}, 
   number    = {349}, 
   type      = {MPI-M Technical Report}, 
   note      = {} 
}  

@Article{roeckner:2006,
  author = 	 {E. Roeckner and R. Brokopf and M. Esch and M. Giorgetta and S. Hagemann
              and L. Kornblueh and E. Manzini and U. Schlese and U. Schulzweida},
  title = 	 {Sensitivity of simulated climate to horizontal and vertical resolution
              in the {ECHAM5} atmosphere model.},
  journal = 	JClim,
  year = 	 2006,
  volume =	 {},
  pages =	 {in press}
}


@Article{simmons:1981a,
  author = 	 {Simmons, A. J. and D. M. Burridge},
  title = 	 {An energy and angular-momentum conserving vertical finite difference scheme and hybrid vertical coordinates},
  journal = 	 MWR,
  year = 	 1981,
  volume =	 109,
  pages =	 {758-766}
}

@TechReport{simmons:1981b,
  author = 	 {Simmons, A. J. and R. Str\"ufing},
  title = 	 {An energy and angular-momentum conservinq finite difference scheme, 
                  hybrid coordinates and medium-range weather prediction},
  institution =  {ECMWF},
  year = 	 1981,
  type =	 {Technical Report},
  number =	 28,
  address =	 {Reading, UK}
}